Improvement in driving mechanisms for roving, slubbing, and other machines



Clilriut Rietze tuuu @fue ALFRED WILCOCK, RICHARD ROBINSON, ANDFREDERICK WILCCCK, CF RCCHDALE, GREAT BRITAIN.

Letters Patent No. 112,103, dated February 21, 1871.

IMPROVEMENT IN DRIVING MECHANISMS FOR ROVING, SLUBBING,AND OTHERMACHINES.

The Schedule referred to in these Letters Patent and making part of thesame.

We, ALFRED WILoooK, RICHARD ROBINSON, and FREDERICK WILcocK, all ofRochdale, in the county vof' Lancaster, Kingdom of Great Britain andIreland,

have invented Improvements in Machinery-'or Ape paratns to be employedforpreparing c cttonand other librous substances for spinning, of whichthe following is a specilication.k l

This invention applies to the machines knownwas slubbing, intermediate,and roving frames, andto such other machines used in preparing cottonand other fibrous substances as are provided with one or more conicalpulleys o r drums, for the purpose of gradually diminishing the speed ofthe bobbins as their Idiameter increases. l

In machines of this class it is necessary for the rollers and thebobbins to start and stop simultaneously, otherwiseimperfect work orbreakages will occur; tnat is to say, if the bobbins stop before therollers, or start after them, the yarn will become curled or snarled;and if the rollers stop before the bobhins, or the bobbins start beforethe rollers, the yarn will be stretched, and eitherlthin places orbreakages will occur; and in order to prevent this the strap whichdrives the cone from the first shaft must be in a complete state oftension, or perfectly tight around the two pulleys, and it has` beenfound by experience that the strap always gets more or less slack byuse, and, hence, im-

perfect or damaged work results.

In order to obviate' this defect and to cause the cone which drives thebobbins to start and stop simultaneously with the rollers, we'use anauxiliary pair of pulleys, (one on each shaft,) and we pass an endlessstrap around these two pulleys, and it is found that this auxiliarystrap assists the cone-strap in stopping and starting, and causes thebobbins to stop and start simultaneously with the stopping and start-ingof the rollers, and thus prevents either the stretching or curling ofthe yarn.

In order to enable others skilled in the art to make and use ourinvention, we will now proceed to descibe its construction andoperation.

On reference to the accompanying` drawing- Figure l shows the way, inwhich we propose to apply our invention to old flames or machinesalready in use. v

It ce is the top cone-shaft, and

d d, the ordinary cone-strap, which is movable over the surface of thecones, by m'eans of the strap-fork or guide,-'iu the usual manner, so asto gradually diminish the speed Aofthe bobbins.

Upon the top'cone-shaft or driving-shaft a, a we fix an auxiliarypulleye c, about the diameter of the larger end of the cones, and u ponthe bottom coneshalt b b we x a second smaller auxiliarypulley, j f,about the same diameter as the smaller end of the cones, and round thesetwo pulleys we pass the auxiliary strap g y. These auxiliary -pulleysmay, if preferred, be made in twoparts, and bolted together so as to beapplied without removing the shafts liom the machine.

In fitting up anew l'rameor machine, we prefer to cast or form theauxiliary-pulleys in one piece with the cones, as shown at Figure 2.

It will, of course, be evident that the same eiect4 might be producedwithout using the auxiliary puly leys by placing an auxiliary strap onone end of the cone-pulleys themselves, by making the cones a littlelonger, or shortening the traverse of the cone-strap, as shown by thedotted lines in iig. 1; but we prefer the use of the auxiliary pulleys,vas before described.

This auxiliary strap g g, as above mentioned, as sists the stopping andstarting of the bobbins, causing them to stop and start at all timessimultaneously with the rollers, but, being narrower than the couestrapd fl,'slips on the pulleys when the machine is in work, and allows thelatter to regulate the speed of the bobbins.

witnesses.

' ALFRED WILCOCK.

RICHARD ROBINSON. FREDERICK WILCOCK. Witnesses:

HENRY BRIERLEY, WILLIAIII Ounce.

